Popular trading platforms include MetaTrader 4 (MT4) and MetaTrader 5 (MT5) for forex and CFD trading, cTrader for its fast execution, and TradingView for charting and social features. Other widely used platforms are Thinkorswim (TD Ameritrade) for multi-asset trading, NinjaTrader for futures and forex, and Interactive Brokers (IBKR) for low-cost, professional-level trading.